1、Adjustable feed amount, insert the timing bolt into the timing plate and feed automatically according to the setting time. 2、Hand rotation of the manual switch, manual feeding, you can experience the fun of feeding fish. 3、Three installation methods: vertical installation, horizontal installation, paste. 4、Made of high quality plastic material, sturdy, durable and long service life. 5、The battery is properly installed and the second hand indicator is specially designed so that you can observe whether the feeder has enough power to use at any time through the operation of the second hand. Condition: 100% Brand New Item Type: Automatic Fish Feeder Model: WT-180A Material: Plastic Color: As Pictures Shown Battery: 1 x AA Battery(Not Included) Weight: Approx. 383g Maximum Aquarium Glass Thickness: Approx. 2.4cm/0.94inch Using Instructions: 1. The battery is properly installed and the second hand indicator is specially designed so that you can observe whether the feeder has enough power to use at any time through the operation of the second hand. 2. Adjust the dial clockwise when adjusting the dial. (for example, if it is 8 o 'clock now, dial the dial number 8 to align with the manual switch above, and dial one turn for 24 hours.) 3. Open the feed box, please put the feed box according to the maximum or minimum amount of standard 4. Close the feed box, pay attention to the direction marked with "up", and finally push it into the rotation shaft for positioning 5. Adjust the feed volume switch, determine the daily feed amount 6. Insert the timing bolt into the timing plate to feed automatically at the set time, each box is 30 minutes (for example, if the fish should be fed at 8 o 'clock, insert the timing bolt into the slot corresponding to 8) 7. Hand rotation of the manual switch, manual feeding, you can experience the fun of feeding fish 8. Three installation methods, vertical installation, horizontal installation, paste 1 x Automatic Fish Feeder 1 x Installing Bracket 1 x Paste Fixed Plate 1 x Timing Bolt Kit 1 x Instruction Manual